Let's roll up our sleeves and solve this. We have 629 and we're going to multiply it by 54, essentially adding 629 to itself 54 times.
Step 1: 0 + 629 = 629
Step 2: 629 + 629 = 1258
Step 3: 1258 + 629 = 1887
Step 4: 1887 + 629 = 2516
Step 5: 2516 + 629 = 3145
Step 6: 3145 + 629 = 3774
Step 7: 3774 + 629 = 4403
Step 8: 4403 + 629 = 5032
Step 9: 5032 + 629 = 5661
Step 10: 5661 + 629 = 6290
Step 11: 6290 + 629 = 6919
Step 12: 6919 + 629 = 7548
Step 13: 7548 + 629 = 8177
Step 14: 8177 + 629 = 8806
Step 15: 8806 + 629 = 9435
Step 16: 9435 + 629 = 10064
Step 17: 10064 + 629 = 10693
Step 18: 10693 + 629 = 11322
Step 19: 11322 + 629 = 11951
Step 20: 11951 + 629 = 12580
Step 21: 12580 + 629 = 13209
Step 22: 13209 + 629 = 13838
Step 23: 13838 + 629 = 14467
Step 24: 14467 + 629 = 15096
Step 25: 15096 + 629 = 15725
Step 26: 15725 + 629 = 16354
Step 27: 16354 + 629 = 16983
Step 28: 16983 + 629 = 17612
Step 29: 17612 + 629 = 18241
Step 30: 18241 + 629 = 18870
Step 31: 18870 + 629 = 19499
Step 32: 19499 + 629 = 20128
Step 33: 20128 + 629 = 20757
Step 34: 20757 + 629 = 21386
Step 35: 21386 + 629 = 22015
Step 36: 22015 + 629 = 22644
Step 37: 22644 + 629 = 23273
Step 38: 23273 + 629 = 23902
Step 39: 23902 + 629 = 24531
Step 40: 24531 + 629 = 25160
Step 41: 25160 + 629 = 25789
Step 42: 25789 + 629 = 26418
Step 43: 26418 + 629 = 27047
Step 44: 27047 + 629 = 27676
Step 45: 27676 + 629 = 28305
Step 46: 28305 + 629 = 28934
Step 47: 28934 + 629 = 29563
Step 48: 29563 + 629 = 30192
Step 49: 30192 + 629 = 30821
Step 50: 30821 + 629 = 31450
Step 51: 31450 + 629 = 32079
Step 52: 32079 + 629 = 32708
Step 53: 32708 + 629 = 33337
Step 54: 33337 + 629 = 33966

So, 629*54 = 33966